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The ultraviolet absorber on Venus - Amorphous sulfur
Author and Affiliation:
Toon, O. B.(NASA Ames Research Center, Moffett Field, CA, United States);
Pollack, J. B.(NASA Ames Research Center, Space Science Div., Moffett Field, CA, United States);
Turco, R. P.(R & D Associates, Marina del Rey, CA, United States)
Abstract: It is pointed out that the identity of the chemical species responsible for the yellow coloration of the clouds of Venus and for the dark features which dapple the planet at ultraviolet wavelengths has long been a mystery. Independent pieces of evidence, discovered recently, suggest now that amorphous sulfur is the so-called UV absorber. A review of earlier ideas and controversies is presented, and attention is given to a new physical-chemical model of the Venus clouds which shows that sulfur should form there. A description is provided of physical characteristics of the cloud particles that, in comparison with model predictions, indicate the presence of sulfur. Optical data suggesting that elemental sulfur occurs in the clouds is discussed, and cloud morphological evidence for sulfur is considered.
Publication Date: Aug 01, 1982
Document ID:
19830031348
(Acquired Nov 30, 1995)
Accession Number: 83A12566
Subject Category: LUNAR AND PLANETARY EXPLORATION
Document Type: Journal Article
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Ames Research Center; Moffett Field, CA, United States
R and D Associates; Marina Del Rey, CA, United States
Description: 16p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ABSORBERS (MATERIALS); SULFUR; ULTRAVIOLET ABSORPTION; VENUS CLOUDS; ALBEDO; AMORPHOUS MATERIALS; ATMOSPHERIC CHEMISTRY; ATMOSPHERIC MODELS; CHEMICAL REACTIONS
Imprint And Other Notes: (International Conference on the Venus Environment, Palo Alto, CA, Nov. 1-6, 1981.) Icarus, vol. 51, Aug. 1982, p. 358-373.
Availability Source: Other Sources
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